i doubt that MS is an improvement over Google when it comes to privacy concerns.
Source: https://www.blog.google/products/gmail/g-suite-gains-tractio...
Reading your email for data gathering is their entire business model so if they don't explicitly say they don't, you should assume they do.
MS built Win10 to spy on you and build a business from data mining. Why would they not do that for email? (Or, more likely, change Outlook's ToS to allow it once you are hooked.)
You could say that of any email provider, but ProtonMail is under GDPR so it makes it a safer alternative.
I thought GDPR was European union? Protonmail is in Switzerland.
https://www.sevenforums.com/tutorials/280093-outlook-com-opt...